What is avascular necrosis (AVN)?
Avascular necrosis is a condition where the blood-supply to bones is damaged, resulting in the death and collapse of bony tissue, usually near the joints. In transplant patients, AVN is usually a result of the use of high-dose steroids such as prednisone for immunosuppression. For more information, go to: http://www.merck.com/mmhe/sec05/ch064/ch064a.html http://www.umm.edu/bone/avascul.
